LP38501-ADJ_15 Datasheet, PDF (5/27 Pages) Texas Instruments – LP3850x-ADJ, LP3850xA-ADJ 3-A FlexCap Low Dropout Linear Regulator for 2.7-V to 5.5-V Inputs

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LP38501-ADJ, LP38503-ADJ
SNVS522I – AUGUST 2007 – REVISED AUGUST 2015
6.5 Electrical Characteristics
Unless otherwise specified V_IN = 3.3 V, I_OUT = 10 mA, C_IN = 10 μF, C_OUT = 10 μF, V_EN = V_IN, V_OUT = 1.8 V. Minimum and
maximum limits apply over the junction temperature (T_J) range of –40°C to +125°C and are specified through test, design, or
statistical correlation. Typical values represent the most likely parametric norm at T_J = 25°C, and are provided for reference
purposes only.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_ADJ
ADJ pin voltage⁽¹⁾
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 3 A
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 3 A
V_ADJ
ADJ pin voltage (A grade)⁽¹⁾
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 3 A
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 3 A
I_ADJ
ADJ pin bias current
2.7 V ≤ V_IN ≤ 5.5 V
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
V_DO
Dropout voltage⁽²⁾
I_OUT = 3 A
T_J = 25°C
I_OUT = 3 A
ΔV_OUT /
ΔV_IN
2.7 V ≤ V_IN ≤ 5.5 V
Output voltage line regulation^{(1)(3) T}J ^{= 25°C}
2.7 V ≤ V_IN ≤ 5.5 V
ΔV_OUT /
ΔI_OUT
Output voltage load regulation⁽¹⁾
(4)
10 mA < I_OUT < 3 A
T_J = 25°C
10 mA < I_OUT < 3 A
I_GND
Ground pin current in normal
operation mode
10 mA < I_OUT < 3 A
T_J = 25°C
10 mA < I_OUT < 1.5 A
I_DISABLED
Ground pin current
V_EN < V_IL(EN), T_J = 25°C
V_EN < V_IL(EN)
I_OUT(PK)GND Peak output current
V_OUT ≥ V_OUT(NOM) – 5%
I_SC
Short-circuit current
V_OUT = 0 V
V_OUT = 0 V, T_J = 25°C
ENABLE INPUT (LP38501 Only)
0.584
0.605
0.626
V
0.575
0.635
0.596
0.587
3.5
0.605
50
420
0.04
0.05
0.12
0.24
2
0.025
6
6
0.614
V
0.623
nA
750 nA
550 mV
665 mV
%/V
%/A
4
mA
5
0.125
µA
15
A
A
V_IH(EN)
V_IL(EN)
t_d(off)
t_d(on)
I_IH(EN)
I_IL(EN)
Enable logic high
Enable logic low
Turnoff delay
Turnon delay
Enable pin high current
Enable pin low current
V_OUT = ON
V_OUT = OFF
Time from V_EN < V_IL(EN) to V_OUT = OFF
I_LOAD = 3 A
Time from V_EN > V_IH(EN) to V_OUT = ON
I_LOAD = 3 A
V_EN = V_IN
V_EN = 0 V
1.4
V
0.65
25
µs
25
µs
35
nA
35
(1) The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included
in the adjust voltage tolerance specification.
(2) Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. For
any output voltage less than 2.5 V, the minimum VIN operating voltage is the limiting factor.
(3) Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.
(4) Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current.
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